You still have to get your hands on the PS2 network setup disc though (I think) to get the PS2 configured for network use. Besides, the prices of the network adapter have dropped. The knockoff's can be nabbed for $15-$20, and the Sony's for $30-$40. They come with the bootable setup discs and they accept cat5 cable to whatever you need to connect to--PC's NIC, Router, switch, etc. Pretty straightforward install from what I've read. Using the USB/Ethernet converter to link to your PC will leave you hanging if it doesn't work--with an actual PS2 accessory you have some form of tech support to fall back on if it doesn't work for some reason. Just a thought or two....
If it ain't broke don't try to fix it! But, hell if you can tweak that bastard just a little bit more....hehehe.